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The Peak Energy Sum Hydrocarbon Indicator and its Application in Bohai Oilfield
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
Hydrocarbon detection technique predicts the location of petroleum reservoir by analyzing seismic data. This technique is significant in hydrocarbon exploration and production. However, seismic data is affected by many factors such as noise and amplitude preservation, it is difficult to differentiate oil sand and water sand through analyzing seismic data since single hydrocarbon-bearing sand is unable to generate obvious observable difference. So hydrocarbon detection technique usually leads to multiple solutions, and successful cases are less. Since hydrocarbon accumulate in a certain range of underground space, seismic data response from multiple hydrocarbon reservoirs could be identified easily. In this paper, the author proposes a new hydrocarbon detection method which based on peak energy sum hydrocarbon indicator. This method first analyzes hydrocarbon sensitive seismic frequency and utilizes the variable factor generalized S transform to achieve seismic energy of sensitive frequency, then obtains an energy threshold by statistical analysis of known hydrocarbon reservoirs, keeps the peak energy which is greater than the energy threshold, finally extracts peak energy sum in a certain range of underground space to predict hydrocarbon. This method has been successfully applied in Bohai oilfield.